Loading the lesson
Loading the lesson
Search AllRounder.ai
Search the courses, subjects, tracks, games and features, or jump straight to a page.
Search the courses, subjects, tracks, games and features, or jump straight to a page.
2 cards from this section. Quick, good the night before a test.
What is electromotive force?
Think of it like the battery's push without any load.
What does internal resistance in a cell affect?
Consider how circuits behave when loads are applied.
What is internal resistance?
Think about where the resistance is located in relation to the battery.
If the emf of a cell is 10V and the current flowing is 5A with an internal resistance of 1 ohm, what is the terminal voltage?
Use the formula for terminal voltage.
An electrolytic cell has an emf of 15V and internal resistance of 4 ohms. Calculate the maximum current that can be drawn and the terminal voltage across a 10-ohm load when 2A is flowing.
Break the problem into two parts: calculate I_max, then use the terminal voltage formula.
Discuss a scenario where measuring internal resistance is critical for a battery pack used in an electric vehicle.
Consider how this could affect the vehicle's power delivery.
4 more questions in this section. Enroll free to practise them all.
Enroll free